Ventilator



Oct. 22, 1935. R. H. GUENTHER VENTILATOR Filed OCE, 24, 1954 2 Sheets-Sheet 1 I Mmmm i' Oct. 22, 1.935. R. H. GUENTHER VENTILATOR Filed OCT'. 24, 1954 2 Sheets-Shieet 2 Patented Oct. 2v2, 1935 UNITED STATI-:s

PATENT OFFICE 2 Claims.

This invention relates to improvements in ventilators of the rotary type, and is particularly adapted, though not necessarily limited in its use, to be attached to chimneys or draft pipes, and one of the objects of the invention is to provide an improved device of this character embodying a hood having a vane of substantial size attached thereto, whereby the mouth or open side of the ventilator will be always kept from the wind, thereby insuring that the same will be rain and storm proof, with the further result that down drafts will be impossible.

A further object is to provide improved means for mounting the hood.

A still further object is to provide an improved form of construction of hood.

To the attainment of these ends and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention and in which Figure 1 is a front elevation of a device of this character constructed in accordance with the principles of this invention.

Figure 2 is a side elevation of Figure 1.

Figure 3 is a View taken on line 3 3, Figure 1, from the vbottom of the device.

Figure 4 is a vertical sectional View taken on line 4 4, Figure 1.

Figure 5 is a plan View of a blank from which the hood shown in Figures 1 to 4 is constructed. Figure 6 is a view similar to Figure 5 of another form of hood, that is a hood of a larger ,size and constructed in two pieces.

Figure 7 is a detail front elevation of a portion of a hood shaped from the blank shown in Figure 6.

Figure 8 is a detail sectional View taken on line 8 8, Figure 7.

Referring more particularly to the drawings, the numeral I0 designates generally a supporting base constructed of any suitable material and preferably of annular configuration. Arranged within the base are ribs II having their ends secured to the base and with portions I2 abutting for a substantial length adjacent the diametric lcenter of the base to provide a bearing for an upright member I3. This member i3 is preferably providedwith a threaded extremity tl which is seated in a bearing formed between the abutting vportions I2 of the ribs, and nuts or collars vI5 are provided on the threaded portion on opposite sides of the ribs to secure the upright I3 in position and to provide a means whereby the upright may be adjusted in directions lengthwise of its longitudinal axis.

The abutting portions I2 of the ribs may be 5 secured together in any suitable manner, such as by means of fastening devices I6.

The upper extremity of the upright I3 is preferably conical or tapered as at I'I to form an end bearing. l0

'I'he numeral i8 designates generally a blank constructed of any suitable material such as sheet metal or the like and may be provided with reinforcing ribs I9 upstruck from the material and disposed adjacent but spaced from the pe- 15 ripheral edge of the blank. Additional reinforcing ribs 23 may also be provided in the blank. The blank is Shaped to form a hood having an open bottom 2l and an open side 22 and the blank is shaped or bent along the lines 23 t0 20 form the body portion of the hood and also along the lines M L to form a vane 26 integral with the hood. The portions 2l of the blank which form the vane 26 are brought together and in Contact as shown more particularly in Figure 1, 25 and these portions 2l may be secured together in any desired or suitable manner, such as by means of a fastening rivet 28. The vane `thus constructed will be disposed centrally with respect-to the hood and with the open side 22 and l30 the vane serves as a means, when acted upon by the wind, to always maintain the open side 22 of the hood away from the wind, thereby insuring that no down drafts will be created through the hood and also that the elements will be prevented from entering the hood.

The hood thus formed may be of any desired size and when of an exceptionally large size, the blank forming the hood instead of being constructed of a single piece of sheet material as disclosed in Figure 5, may be formed of two blanks 29 3 0, as disclosed in Figures 6 to 8. In this form of the invention, one-half of the hood will be formed by each of the blanks and a portion of the blank 29 maybe shaped to form one ,45 part of the vane as at 3l, Aand a portion of the blank 30 may be shaped to form another portion of the vane as at These vane portions are respectively bent or shaped along the lines 34, so that when the blanks are assembled, theportions of the blanks forming the vane will be brought together with their faces in contact, as shown more clearly in Figure 7. One of the vane portions, such as the portion 32, is preferably of a width greater than `the other portion 3i so that .55

- the edge 35 thereof may be flanged or bent over l.as

Y similar to the Vthe edge of the other vane portion. The parts when thus assembled may be secured together Vby means of fastening devices 36, such as rivets or the like. Y

The body of the hood is shaped from the two blank sections 29-30 by being bent or shaped along the lines 31 to form the base of the hood, blank shown in Figures 1 and 2 and being bent upon the lines 23.

The edges 38-39 of the body portions of the blanks are overlapped as shown more clearly in Figure 8, and are secured together by means of fastening devices 49.

The hood whether thus formed of aY single blank or ofV sections secured together will be shaped to'form a 'skirt or depending portion V4I at the lower end, and reinforcing horizontal ribs 42 Vmay be provided, if desired. The skirt'or depending portion YII is of an internal diameter greater than the external diameter of the base I0 and overhangs the base for a substantial distance, when the hood is in position and as the Y, hood is rotated about an upright axis, the bottom ofthe hood will'move about the base member I0. The hood is supported by means of a bracket arranged internally thereof, and the bracket is Vmetal having a laterally projecting lower portionV 44V provided with a flange 45 which contacts with the inner face of the wall of the hood and is secured thereto by a suitable fastening V'device V4B. At the upper end of the member 43 is a laterally projecting portion 41 extending in a direction opposite tothe direction of the portion 44 and terminates adjacent the top of the hood and in'proximity to the base of the vane. A' cross .member 48 is secured to the extremity of the portion 41 of the bracket and this member 48 contacts with the inner'face of the hood at the top thereof and the hood is secured to the member 48 in any suitable manner, such as by means of fastening devices 49. Y

A hollow upright frame member 50 also preferably constructed of suitable material, such as metal, is secured to the upright portion 43 of the bracket by means of fastening devices 5I and the frame member 50 is provided with spaced upper and lower parallel members 52-53 while a bearing member 54 is arranged within .the frame member 50 and is secured in position by means of suitable fastening devices 55, and one of the' fastening devices 5I. The member 54 is spaced between the members 52 and 53 andris parallel thereto and forms with the lower member 53 a bearing through which the uprightV I3 freely passes. Thertapered extremity I1 of the upright I3 contactsY with the lower face of the upper memberV 52 of the frame 5I! and this upper member 52V is preferably spaced from the portion 41 yof the upright 43 and'alsoof the member 48.

It will thus be manifest that the hood will be supported Vby the bracket construction and thev bracket construction itself is supported by the upright I3 so that the hood will be free to rotate upon the upright I3 and all danger of wear V placement of the hood.

betweenth end of the upright I3V and the body of the hood will be obviated, thereby prolonging the life of the device.; At the same time the hood will be supported by a single point bearing, rendering the same very sensitive to the action o1 5 the wind.

The bracket being of an open frame construction will also prevent the accumulation of foreign particles as the air or smoke currents passing through the bottom of the hood and out of 10 the open side willY keep the bearing clean.

A lug or pin 56 may be provided to extend through the upright I3 within the frame 50 to serve as a means for preventing accidental dis- Y 15 If desired, the base IIIV may be anchored by means of guy wires, and'to that end there may be provided any desired number of openings 51 in the base, by means of which brackets may be secured to the base, and to which brackets the 20 ends of the anchor wires may be secured. If desired, one end of the anchor wire may be threaded through the opening 51 and secured.

The structure thus described may be secured in position in any suitable manner, either over 2:5y

an opening or the base I0 Vmay be telescoped over the end of an upright pipe, and in which latter case the edges of the ribs II will contact with and rest upon the edge of the pipe.

The ribs I I are comparatively narrow with re-V iso' lation to their height and are so arranged that the lower edges thereof will terminate a sub-v stantial distance above the lower edge of Vthe base IIlso as to provide for the telescoping of the base II over the end of an upright pipe.- Y i315 With this improved construction it will be manifest that the vane being formed integral vwith the hood and being arrangedoin the manner disclosed, will always insure the open side of the hood being positioned away from the wind, with the result that the elements will not enter the hood and down drafts willbe avoided.

` Furthermore, with this construction the neces-Y sity of ball bearings will be dispensed with and the hood will be free and sensitive to move about Y its pivot bearing I1, with the further result that the danger of the supporting bearing I1 wearing through the body of the hood will always beob- Y viated.

Furthermore, the hood is mounted upon aone- 5'() point suspension, thereby reducing friction asithe members 53 and 54 serve only as guides through which the upright I3 passes, and all stress Vand strain will be exerted upon the reduced extremn ity of the upright I3.

. es While the preferred forms of the invention have ibeen herein shown and described, itY is' to be understood that various changes may be made in the details of construction and in the combina l tion and arrangement of the several parts, with- 60 rin the scope of the claims, without Ydeparting from the spirit of this invention.

What is claimed as new is:-

1. A ventilator of the character described embodying a supporting base, a hood separate from the base and having an open side and an open bottom, the latter encompassing the base, a supporting member within the hood, said member comprising an upright portion of substantial length and laterally projecting arms extending'fzo from the ends of said portion in opposite directions, means securing the respective arms to the hood, a bracket carried by said upright portion of the supporting member and comprising spaced Y superposed and substantially parallel bearingim'V members laterally projecting from the supporting member, said bearing members also spaced from the said arms, and a stationary upright spindle secured to said base, said spindle passing loosely through one of the bearing members and having an end bearing with the other of said bearing members, the bearing points of said spindle with said bearing members being intermediate and spaced for a substantial distance from the ends of said arms.

2. A ventilator of the character described embodying a supporting base, a hood separate from the base and having an open side and an open bottom, the latter encompassing the base, a supporting member Within the hood, said member comprising an upright portion of substantial length and laterally projecting arms extending from the ends of said portion in opposite directions, means securing the lower arm to the hood,

a cross member of substantial length secured to and projecting laterally from the upper arm to provide an extended supporting contact with the hood, means securing said cross member to the hood, a bracket carried by said upright portion of the supporting member and comprising spaced superposed and substantially parallel bearing members laterally projecting from the supporting member, said bearing members also spaced from the said arms, and a `stationary upright spindle secured to said base, said spindle passing loosely through one of the bearing members and having an end bearing with the other of said bearingv members, the bearing points of said spindle with said bearing members being intermediate and spaced for a substantial distance from the endsA of said arms.

RUDOLPH H. GUENTHER. 

